EP 2796243 A4 20150909 - ABRASIVE MATERIAL REGENERATION METHOD AND REGENERATED ABRASIVE MATERIAL
Title (en)
ABRASIVE MATERIAL REGENERATION METHOD AND REGENERATED ABRASIVE MATERIAL
Title (de)
VERFAHREN ZUR REGENERATION EINES SCHLEIFMATERIALS UND REGENERIERTES SCHLEIFMATERIAL
Title (fr)
PROCÉDÉ DE RÉGÉNÉRATION D'ABRASIF ET ABRASIF RÉGÉNÉRÉ
Publication
Application
Priority
- JP 2011282037 A 20111222
- JP 2011282041 A 20111222
- JP 2012081463 W 20121205
Abstract (en)
[origin: EP2796243A1] The problem addressed by the present invention is to provide: an abrasive material regeneration method that, by means of an efficient method, recovers cerium oxide from used abrasive material having cerium oxide as the primary component, and then can obtain a regenerated abrasive material by means of a simple method; and a regenerated abrasive material. The abrasive material regeneration method regenerates a cerium oxide abrasive material from a used abrasive material slurry containing the cerium oxide abrasive material and resulting from grinding a grinding subject having silicon as the primary component, and is characterized by regenerating the abrasive material containing cerium oxide through: a slurry recovery step (A) for recovering an abrasive material slurry discharged from a grinder; an isolation/concentration step (B) for adding a magnesium salt as an inorganic salt to the recovered abrasive material slurry, aggregating the abrasive material under the condition that the pH value of the mother liquor converted to 25 DEG C is at least 6.5 and less than 10.0, and thus isolating and concentrating the abrasive material from the mother liquor; and an abrasive material recovery step (C) for recovering the isolated and concentrated abrasive material.
IPC 8 full level
B24B 57/02 (2006.01); B28D 5/00 (2006.01); C02F 11/14 (2006.01); C09K 3/14 (2006.01); C09K 23/52 (2022.01)
CPC (source: CN EP KR US)
B24B 57/00 (2013.01 - KR US); B24B 57/02 (2013.01 - CN EP US); B28D 5/007 (2013.01 - EP US); C02F 1/5236 (2013.01 - EP US); C02F 1/66 (2013.01 - EP US); C09K 3/14 (2013.01 - KR); C09K 3/1409 (2013.01 - CN EP US); C09K 23/002 (2022.01 - KR); C02F 2101/10 (2013.01 - EP US); C02F 2103/12 (2013.01 - EP US); C02F 2103/346 (2013.01 - EP US); Y02P 70/10 (2015.11 - EP US)
Citation (search report)
- [XDI] JP 2000254659 A 20000919 - KURITA WATER IND LTD
- See references of WO 2013094399A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2796243 A1 20141029; EP 2796243 A4 20150909; EP 2796243 B1 20170517; CN 104010770 A 20140827; CN 104010770 B 20170721; JP 5858050 B2 20160210; JP WO2013094399 A1 20150427; KR 20140102697 A 20140822; MY 177685 A 20200923; PH 12014501375 A1 20140922; PH 12014501375 B1 20140922; SG 11201403191P A 20140828; US 2014331567 A1 20141113; US 9796894 B2 20171024; WO 2013094399 A1 20130627
DOCDB simple family (application)
EP 12859923 A 20121205; CN 201280063306 A 20121205; JP 2012081463 W 20121205; JP 2013550205 A 20121205; KR 20147016642 A 20121205; MY PI2014701682 A 20121205; PH 12014501375 A 20140617; SG 11201403191P A 20121205; US 201214367136 A 20121205